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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 01-19-2008, 04:19 PM   #1
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Sound cards

I have a Genius Sound maker 5.1 souncard using the C-Media Electronics Inc CM8738 chipset, which works fine(sort of) and onboard sound using the VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60) chipset.

The first issue is(which I'm not sure is actually relevant to the main issue, but you can decide when I get that part): The onboard sound is disabled in the bios, yet Ubuntu(7.10) can still see it in lspci and gnome sound preferences.

The main issue is, sometimes I'll boot up and be able to hear sound when I get to the login screen. If that happens, sound is perfect i.e everything works, like firefox(youtube, stage6 and anything else I throw at it), wine and any games I run with it, xmms, totem, whatever.

but if there is no sound at the login screen, I don't get sound with firefox or wine, but everything else works fine. To resolve this, I usually reboot my pc until it works, which can take up to 6 or 7 attempts so it isn't the best solution.

In the beginning, firefox and what have you didn't work at all until I found a forum post about installing alsa-oss and creating a simlink(can't remember where though).

Any idea if it has something to do with the onboard sound or could it have something to do with the order in which sound modules are being loaded?

any help would be appreciated.
Old 01-19-2008, 05:21 PM   #2
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It could be due to the order. If it is then you can solve it by specifying to alsa which card should be nubered card 0.

Not sure where the file should be in Ubuntu, but in Slack its /etc/modprobe.d/ This is an example I use for my 2 card setup. Obviously you need to know the correct module names, but it should give you an idea.

cat /etc/modprobe.d/sound

alias snd-card-0 snd-emu10k1
alias sound-slot-0 snd-emu10k1
alias snd-card-1 snd-ens1371
alias sound-slot-1 snd-ens1371
options snd-emu10k1 index=0
options snd-ens1371 index=1
Old 01-20-2008, 03:14 PM   #3
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Cheers m8, I sorted it out.

Alsa was using the onboard sound even though it's disabled.

using sudo asoundconf list, i found the names of the cards and was able to set the default with
sudo asoundconf set-default-card CMI8738MC6


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